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Finding the Fourth Proportional to 2,677.80, 4,016.82 and 828.87

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Solution

The fourth proportional to 2,677.80, 4,016.82 and 828.87 is: 1,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,677.80 : 4,016.82 = 828.87 : x
  2. Step 2: Convert to fraction form
    2,677.80/4,016.82 = 828.87/x
  3. Step 3: Cross multiply
    2,677.80x = 4,016.82 × 828.87
  4. Step 4: Simplify right side
    2,677.80x = 3,329,421.59
  5. Step 5: Solve for x
    x = 3,329,421.59/2,677.80
  6. Step 6: Final answer
    x = 1,243.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.